Home / 21,183.36-31,780.80-7,333.44

Finding the Fourth Proportional to 21,183.36, 31,780.80 and 7,333.44

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Solution

The fourth proportional to 21,183.36, 31,780.80 and 7,333.44 is: 11,002.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.36 : 31,780.80 = 7,333.44 : x
  2. Step 2: Convert to fraction form
    21,183.36/31,780.80 = 7,333.44/x
  3. Step 3: Cross multiply
    21,183.36x = 31,780.80 × 7,333.44
  4. Step 4: Simplify right side
    21,183.36x = 233,062,589.95
  5. Step 5: Solve for x
    x = 233,062,589.95/21,183.36
  6. Step 6: Final answer
    x = 11,002.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.